期刊
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
卷 388, 期 -, 页码 90-91出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0921-4534(02)02665-5
关键词
zero-energy edge states; d-wave superconductivity; graphite ribbons; coexistence of different order parameters
We propose a criterion to determine the existence of zero-energy edge states for a class of particle-hole symmetric systems. A loop is assigned for each system, and its topology and a symmetry play an essential role. Applications to d-wave superconductors are demonstrated. (C) 2003 Elsevier Science B.V. All rights reserved.
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